John c



(No Model.)

J. 0. WELOH. PERPETUAL GHRONOLOGIOAL CALENDAR.

No. 309,271. PatentedDec. 16, 1884.

lfigjfl Uirnn rarrs ATFNT rri JOHN G. \VELOH, OF NElV YORK, N. Y.

PERPETUAL CHRONOLOGICAL CALENDAR.

SPECIFICATION forming part of Letters Patent No. 309,271, dated December16, 1884.

Application filed April 12, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, J OHN C. \VELOi-I, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in PerpetualChronological Galendars; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains tomakeand use the same.

This invention consists of aperpetual re-- versible chronologicalcalendar composed of concentric rings which are adapted to be rotated onone anotl1e r,-aud are provided with like divisions of time on bothsides, the divisions on one side being arranged reversely to thedivisions on the other side, so that the calendar may be set from eitherside, and will give the same reading on both sides.

In order that my invention may be clearly understood, I have illustratedin the annexed drawings and will proceed to describe a practical formthereof.

Figure 1 illustrates one side of a calendar composed of two concentricrings. Fig. 2 illustrates the reverse side thereof. Fig. 3 is across-section of the same. Fig. 4 illustrates the manner of fitting therings together.

The same letters of reference indicate identical parts in all thefigures.

Each face of the inner ring, A, is divided by thirty-five radial linesinto thirty-five equal spaces. where the days of five weeks are markedin regular order. Thirty-one equal spaces, where the days of the monthare marked, are formed on each face of the outer ring, B, by thirty-tworadial lines adapted to register with thirty-two of the lines on thefaces of the inner ring, so that there is one Wide blank space, equal tofour spaces on the inner ring, on each face of the outer ring besidesthe thirty-one marked spaces. On one, side of this calendar the numeralsand days run from left to right, and on the other side from right toleft,.and the days are so arranged and held from turning in ways and bymeans different from what I have shown and dcscribed. Any skillfulmechanic can readily select other proper means for the purpose.

- =Fig. 5 illnstratesa calendar provided, in

addition to the rings A and B,with a ring, 0, each face of which isdivided by twelve radial lines into twelve equal spaces, where thetwelve months of the year are marked in regular on der, running fromright to left on one side, and from left to right on the other side. Toset this ring 0, it is turned until the current month is broughtopposite to the blank space on ring B.

This calendar may be manufactured in the form of a watch-charm or as apocket-piece. It may also be constructed in the form of a stand orpaper-weight for use on a desk. It may be ornamented to any desireddegree.

I claim as my invention The perpetual reversible chronological calendardescribed, composed of rotatable concentric rings which have both facesexposed, are fitted frietionally within one another, and are providedwith like divisions of time on both sides, the divisions on one sidebeing arranged reversely to the divisions on the other side, allsubstantially as before set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN C. \VELGH. Witnesses:

E. T. WVALKER, W. M. HANNAY.

